Lumber board



FIG. 1 is a perspective view of a lumber board showing our new design;

FIG. 2 is a front view of the lumber board;

FIG. 3 is a rear view of the lumber board;

FIG. 4 is a right side view of the lumber board, the left side view being identical; and,

FIG. 5 is an end view of the lumber board, and the other end view being identical.

The lumber board is broken away at a point intermediate its two ends in FIGS. 1–4 in order to indicate that a specific length forms no part of the claimed design. 

The ornamental design for a lumber board, as shown and described. 